I've been wearing cold hunting gear under my armor for years. I love everything about them except the pair price is over $50. I found them, I figured they probably weren't anything special, but I'd try. They're great and I think I'll like them more than UA. I have worn them a few times in 30 degree weather and they have worked well. They are very comfortable. So comfortable that when I get home from a hunt I often sit in it for the rest of the night. I have no complaints and will most likely order more. As for the sizes, they seem to be the same size as underwear.
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